| Issue |
146631
|
| Summary |
Internal compiler error while cross-compiling LLVM 20.1.5 with GCC 8.1.0
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
Sangeetha-E
|
While cross-compiling LLVM 20.1.5 using GCC 8.1.0, I am encountering the following issues:
Initial Error:
```
llvm-20.1.5.src/lib/Support/APFloat.cpp:130:61: error: 'const llvm::fltSemantics{15, -14, 11, 16, IEEE754, IEEE, true, true}' is not a constant _expression_
static constexpr fltSemantics semIEEEhalf = {15, -14, 11, 16};
```
Reference Fix Applied:
I followed the suggestion in this GitHub issue:
https://github.com/llvm/llvm-project/issues/81013#issue-2123529849
Subsequent Error After Applying Fix:
```
llvm-20.1.5.src/lib/Analysis/CtxProfAnalysis.cpp:233:5: internal compiler error: in tsubst_decomp_names, at cp/pt.c:16535
for (auto &[_, SubCtxSet] : Ctx.callsites())
```
Note:
- These issues occur when using GCC 8.1.0.
- When I compile LLVM 20.1.5 with GCC 13, the build completes successfully.
- This suggests that newer versions of LLVM (including 20.1.5) may require GCC >= 13 for successful compilation.
Request:
Please confirm:
- Whether LLVM 20.1.5 officially requires GCC 13 or later.
- Are there any known workarounds to build LLVM 20.1.5 with GCC 8.x?
Thank you.
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